diff --git a/dev-ruby/ruby_parser/ruby_parser-3.21.0.ebuild b/dev-ruby/ruby_parser/ruby_parser-3.21.0.ebuild
index c2298b1026f92..4586105cfbd4f 100644
--- a/dev-ruby/ruby_parser/ruby_parser-3.21.0.ebuild
+++ b/dev-ruby/ruby_parser/ruby_parser-3.21.0.ebuild
@@ -14,7 +14,7 @@ HOMEPAGE="https://github.com/seattlerb/ruby_parser"
 
 LICENSE="MIT"
 SLOT="3"
-KEYWORDS="~alpha amd64 ~arm ~hppa ~ppc ~ppc64 ~sparc ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x64-solaris"
+KEYWORDS="~alpha amd64 arm ~hppa ~ppc ~ppc64 ~sparc ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x64-solaris"
 IUSE="test"
 
 ruby_add_rdepend ">=dev-ruby/sexp_processor-4.16.0:4"